Metal working machinery



NOV. 21, 1933. c DAVlS METAL WORKING MACHINERY Filed Feb 29, 1932 8 Sheets-Sheet l Nov. 21, 1933. c. J. DAVIS METAL WORKING MACHINERY Filed Feb. 29, 1952 8 Sheets-Sheet 2 lNVE/VTO' Nov. 21, 1933. Q ws 1,936,383

METAL WORKING MACHINERY Filed Feb. 29, 1932 8 Sheets-Sheet 3 Nov. 21, 1933. c. J. DAVIS METAL WORKING MACHINERY Filed Feb. 29, 1932 8 Sheets-Sheet 4 Nov. 21, 1933. Q J w 1,936,383

METAL WORK ING MACHI NERY Filed Feb. 29, 1932 8 Sheets-Sheet 5 Q m 7 v 3 IZglZ NOV. 21, c v s METAL WORKING MACHINERY Filed Feb. 29, 1932 8 Sheets-Sheet 6 lily 411 1 44411110a0/1/1111win/11111101111z Nov. 21, 1933. c. J. DAVIS 1,936,383

METAL WORKING MACHINERY Filed Feb. 29, 1952 8 Sheets-Sheet 7 1151i 5 I 'gl 5..

Nov. 21, 1933. c. J. DAVIS METAL WORKING MACHINERY Filed Feb. 29, 1932 8 Sheets-Sheet 8.

Patented Nov. 21, 1933 l.

; UNl'lED STATES PATENT oFrc METAL WQRKING MACHINERY Cecil J. Davis, Kenton, Ohio, assignor to The Ghio Machine Tool Company, Kenton, Ohio, a corporation of Ohio Application February 29, 1932. Serial No. 595,832

6 Ciairns. (CI. 29-26) It isthe object of my invention to provide novel Fig. 10 is a vertical section of a detail of the controlling means for controlling various operasame, taken in the plane of the line l-10. oi

tions in a metal working machine and for inter- Fig. 9. locking said controls so that interference between Flg. 11 1s a horizontal section of the same, taken 5 operations be avoided and safety assured; in the plane of the line 11-11 of Fig. 8. and, further, to provide novel trains ofv inter- Fig. 12 is a vertical section, taken on the line related mechanisms for performing various opera 12-12 of Fig. 1, and partly broken away, showing tions in a machine of this character. the elevating means for the head.

I have exemplified my invention as applied in Fig. 13 is a rear end elevation of my improved 10 a machine in which relative rotation is caused device. partly broken away, and partly in section between the tooland the work in performing the on the line 13-13 of Fig. 2. cuttin operations, its particular application be- F g. 14 is a horizontal section of my improved ing in a so-called coring machine having a rotary device, taken on theirregular line l414 of cutter spindle, from which its application in other Fig. 1.

5 relations may be readily perceived. Fig. 15 is a vertical section, taken on the line It is the object of my invention, further, to 16-15 of Fig. 1, and partly broken a provide means in a machine of the character Fig. 161s a cross-section of the same, taken-in mentioned for elevationally positioning the head, the p a the line l6-l6 of 5. speed changing means for the latter located in F 17 is a Cross-section of the Same, taken i 2 the shiftable head, and control means therefor the p e Of the line 17-l7 of 5. located at the base of the column; further, to 18 a C ss-section of my improved device, provide means for elevational'ly feeding an outer taken on th i e of d p y support for the coring bar operated respectively broken away. by said speed changing means in the shiftable Fig. 19 is a vertical side View of a detail of the 25 head and said control means at the base of the same. taken in the direction of they line 19-19 column; further, to provide a carriage and .a g.18. work-supporting table thereon, and feeding means 20 s a Ve t Section Of a detail of h therefor respectively provided with speed chang same, taken in the plane of the line 20-20 of ing means in said shiftable head and motion'conig. 18.

30 trol means for said carriage and table respectively g. 2 is a vertical section of a detail of the at the base of the column; and, further, to proa ta n on t e line 21-21 0 g. .20. vide interlocking means for said control means Fig. 22 is a horizontal sectional view of a detail respectively, so that interference in operations of t e Same, taken i t p e f he line 2222 the respective operated parts is precluded. of ig. 21. 35 In the drawings: Fig. 220. is a cross-sectional view, taken on the Fig. 1 is a front elevation of a metal working ine 2o 2a of Fig. 20. showing a detail of the machine embodying my invention. locks for the control levers.

Fig. 2 is a plan View of the same, partly broken Fig. 23 is a horizontal sectional view, taken on away the line 23-43 of Fig. 20, showing the interlock 40 Fig. 3 is an end elevation of my improved device. p a s a d i116 p Cowling with.

Fig 4, i a, vertical section of a detail or" the 2e, 25 and 26 show plan views of the refeeding connection for the spindle, taken on the spe tiv int k p a and h pins asti line 4-4 or 3, and partly broken away. therewith, showing the respective plates in neu- Fig. 5 is a vertical section of the initial portion tral positions in full lines and in looking posiof the power driving means, taken on the line tions in dotted lines. of Fig V Fig. 27 is a cross-section of the same, taken c is a horizontal section of the same, taken in the plane f h li 7-27 f Fi 23. i the plane of the line 6-6 of Fig. 5. In the machine exemplified, shown as a bor- Fig, '7 is a horizontal section of a detail of the fig machine, there is a base 31 from one end of 50 same, taken on the line 77 of Fig. 1. which a column 32 extends upwardly. (Figs. 1,- 2 1 5 Fig, 8 is a vertical section of the head of my and 3). Ahead 33 is slidable up and down on the improved device, taken on the line 8-8 of Fig. 3, column on guideways 34, and is elevationally and partly broken away. I feed-able by means of a screw 35 (Fig. 12) jour- Fig. 9is a vertical section of the same, taken naled at its lower end in a bearing 36 and at its in the plane of the line 9-9 of Fig. 8. upper end in a bearing 37, the screw having no wise of the base on the guideways 53.

threaded connection with a nut 38 shown fixed in the head.

A tool-carrying spindle 41 has a sleeve journaled in the head in bearings 42, 43, and is arranged for having a tool removably fixed thereto. (Figs. 1, 2, 3, 4 and 8). Such tool may be a milling tool for either end cutting or side cutting, a boring tool, or other rotary tool, and may be a boring tool 44 fixed to a boring-bar 45 releasably secured by a chuck 46 to the tool end of the spindle.

The outer end of the boring-bar is supported in a bearing 49 in a slide 50, (Figs. 1, 2 and 13), adjustable or feedable between ways 51 of a standard 52 adjustably positioned by suitable means in upright position along the ways 53 of the base and secured in adjusted positions by means of a clamp 54. The slide is movable up and down in the standard by means of a screw 55 which is journaled in a bearing 56 in the lower end of the standard and a bearing 57 in the upper end of the standard, and has threaded connection with a nut 58 fixed in the slide.

A carriage 61 is adjustable or feedable length- (Figs. 1, 2 and 14). A work supporting table 62 is adjustable crosswise of the base on the carriage on guideways 63 on the carriage.

Power is applied to the operating parts of the inachine by means of an electric motor 65 mounted on a bracket 66 on the column and controlled by a switch 67, which may have suitable operating means connected therewith for controlling the same automatically from moving parts of the machine, especially for controlling the limits'of feeding movements of the latter. A tappet-rod 68, having tappets 69 thereon is shown for this purpose. The rotor of the electric motor has a pulley 70 fixed thereto.

{slot 83 in the housing.

A jack-shaft 71 is journaled in bearings 72, part of which are in a housing 73 releasably secured in the lower part of the column. (Figs. 5, 6 and 14). A second shaft 74 is journaled in bearings 75 in the housing. Speed changing *gearing is shown between these shafts, comprising a nest of gears 76 on the shaft 71 and a nest of gears 77 on the shaft 74. The nest of gears 77 is slidable lengthwise of the shaft 74 for engagements of its respective gears with the respective gears of the nest of gears 76.

A silent belt 78 is received about the pulley 70 and a pulley 79 on the shaft 71 for driving the latter.

Thus a fork 81 is mounted on a slide 82 in a (Figs. 6 and 14). The slide is provided with a rack 84 with which the teeth of a segment gear 35 engage, the latter being fixed to an upright shaft 86. This upright shaft is journaled within 'a bearing 87 of a bracket 88 on the head, (Figs. 4 and 7), and a bearing 89 in a bracket 90 extending from the,

housing 73. (Fig. 6).

A handle 91 is pivoted to a rock-shaft 92 jour naled in a bearing 93 of the bracket and has a bevel gear 94 thereon which meshes with a bevel gear 95 on the upright shaft 86 journaled in the bearing 87. (Figs. 1, 4 and 7). The latter bevel gear has usual spline groove and key connection with the upright shaft so as to move up and down with the head.

A bevel gear 161 is fixed to the shaft 74 and meshes with the bevel gear 102, the hubof which is journaled in a bearing 163 in the lower end of the column. (Figs. 5 and 6). The latter bevel gear is fixed to an upright shaft 104 which extends parallel with the guideways on the column and at its upper end is journaled in a bearing 105 at the upper end of the column. (Figs. 1, 2 and 3).

A bevel gear 111 has usual splined groove and key connection with this upright shaft, its hub being journaled in a bearing 112 fixed to the head. (Figs. 4, 8 and 11). The bevel gear 111 moves up and down along said shaft and has continuous rotative connection therewith during the up and down movements and positions of the head.

A shaft 113 is journaled in bearings 114 in the head and has a bevel gear 115 fixed thereto which meshes with the bevel gear 111. This shaft is the initial drive shaft in the head, and is shown as having drive connection with the tool-carrying spindle 41 for rotating the latter at various speeds, and is also shown as having drive connection with a quick traverse mechanism, whereby the quick traverse mechanism is driven intermediately from the upright shaft 104.

The driving connection between the shaft 113 and the tool-carrying spindle is preferably by means of speed changing gearing of any suitable construction, and is exemplified as a speed changing gearing designated generally as 116 in Figs. 8 and 11. V

This speed changing mechanism is exemplified as a nest of gears 117 and is fixed to the shaft 113. A nest of gears 118 has spline groove and key connection with a shaft 119 journaled in bearings 120 in the head and provided with a gear 121 which meshes with a gear 122 fixed to a sleeve 123 journaled in the bearings 42 and 43 in the head and having spline groove and key connection 124 with the tool carrying spindle, so as to rotate the latter and permit axial feeding movements of the same in the sleeve.

A fork 125 is slidable on a rod 126 in the head and receives one of the gears of the nest of gears 118. It is provided with a pin 127 with which a fork 123 engages. The latter fork is on a rockshaft 129 journaled in bearings 130 in the head and provided with a control handle 131 arranged .5.

This may be of any suitable construction, and

is exemplified as a nest of gears 136 fixed to a shaft 137 journaled in bearings 138 in the (Figs. 8 and 11). This nest of gears is meshed by the respective gears of a nest of gears 139 having usual spline groove and key connection with a. shaft 149 journaled in bearings 141 in the head. A fork 142 has slip engagement with one of the gears of this nest of gears and has a bearing 143 slidable on a rod 144 fixed in bearings 145 in the front wall 146 of the head.

This front wall is releasably secured body of the head by bolts 147.

A fork 151 is received about a pin 152 on the bearing 143, and is mounted on a rock-shaft 153 to the journaled in a bearing 154 in the front wall of 15, Z

-8 and 11).

This feed changing mechanism is preferably driven from the spindle, as by means of a gear 156 on the sleeve 123 and a meshing gear 157 fixed on the shaft 137.

A bevel gear 161 is fixed to the shaft and meshes with a bevel gear 162 fixed to a shaft 163 journaled in 164 in the head and provided with a bevel gear 1 5 which meshes with a pair of bevel 186, 167. The hubs of this pair of bevel gears are j0U I- naled in bearings 168, 169, and are journaled about an upright shaft 170. A clutch collar 171 has usual spline groove and key connection with th s upri ht shaft, the clutch faces of clutches 172, 173, being between this clutch collar and the respective gears 165, 157, for forming power connection between said respective. gears and said upright shaft for rotating the upright shaft i1. reverse directio s.

The clutch co movable by means of a fork 175, fixed to a rocker rod 176, journaled in bearings 177 in the head and provided with a 17-3 on the head and having suitable engagement with the head for placing the clutch collar in neutral osition or in clutch engagement with either of the gears 156, 167.

Suitable -eans may also be provided for automatic con 31 of the drive connection between the feed gearing and said upright shaft, as for limiting feed movements of the same, and for automatic reversal of said feeding movements.

Rapid traverse movements are also provided in th head, exemplified as accomplished by means of a bevel gear 181 fixed to the shaft 113. (Figs. This bevel gear meshes with a bevel gear 182 fixed to a shaft 183 journaled in bearin s 184 in the head, and having a bevel gear 185 This 12 er bevel gear meshes with '86, 187, the hubs of which are jour- 188, 189, and are loosely ion;- naled about a -..1aft having a further bearing in the head and having a bevel gear 192 LU-L fixed thereto.

A clutch col ar195 has usual spline groove and connecti with the 195. The clutch faces of clutches 195, 157, are at the respective nds of said clutch collar and the proximate ends rs 186, 187, for engaging either of said bevel gears with the shaft 190.

A f k is to a rock-shaft 202 journaled in bearings in the head. The fork is received in an annular groove 20% in the clutch collar. A handle 20-5 is pivoted to the rock-shaft and is shiftable on the head for positioning the fork for f the clutch collar and for her of the clutches thereof ive bevel gears. This mechanism for the pnpose of determining the forward feed and reverse feed of the rapid traverse mechanism.

The bevel gear 122 meshes with a bevel gear 20-3, the hub of whi is journaled in a bearing 207 in. the head and has a bevelgear 208 fixed to its opposite (Figs. 8 and 9) This latter bevel gear meshes with a bevel gear 209, the hub of which is jenrnaled n the bearing 169 in the frame of he head. jcurnalw around the upright shaft 170. A clutch 211 has its r spective teeth on this collar and on bevel r Engagement of the clutch causes drive connection between the quick traverse mechanism the upright shaft. When the clutch is in release relation, the upright anisrn.

with the fork 215 for shii (Figs. 8, 9 and 11).-

This bevel gear is received screw or connecting the'hand feed with A fork 215 has its pins received in an annular groove 216 in the clutch collar 210.and has a bearing 217 on a rod 218 fixed in the head. A rock-shaft 219 is journaled in bearings 220 in the headand is provided Wibh an arm 221. A link 222 is articulated at 223 with this arm and at 224 ing forlc The rock-shaft 219 is rocked by a handle 225, pivoted to the rock-shaft 219, has suitable engage- ;ment with the head for placing the clutch collar 210 in neutral position or in clutch engagement.

There is an interlock (Figs. 9 12) between the handles 178 and 225, exemplified as including a pin 22:6 movable axially in a bearing 227 in the removable front wall of the head, and normally resting on a flat face 228 of the hubcf the die 225 at arranged to enter a hole 229 in the hub of the handle 178. When the handle 178 is in neutral position, the pin may enter said hole, and when in engaged position for either of the clutches, the solid portion of the hub of the handle 173 resists endwise movement of the If the handle 178 is in engaged position for either of its clutches, the handle 225 cannot be moved on acthe feed changing mechanism, in reverse 6. rections from the quick traverse gearing, and for rotating the screw by hand.

Thus the shaft 17o has a bevel gear 232 fixed thereto, which meshes with a bevel gear 233 fixed on a shaft 234 journaled in a bearing 235 in the head and having a bevel gear 236 iii-red to its other end. (Figs. 8 and 11). This latter bevel gear meshes with a bevel gear 237 which is journaled in a bearing 238 in the head and rotates loosely about a shaft 239. This shaft also has a bevel gear 24c iournaled loosely thereabout, in turn journaled in a bearing 241 in the head. The other end of the shaft 239 is journaled in a bearing 2 12 in the head. This shaft also has a pinion 2 13 fixed thereto, which meshes with a gear 2% fixed to the horizontal feed screw.

A bevel gear 245 is fixed to a shaft 246 journaled in bearings 247 in the head and having a hand wheel 2 18 fixed thereto at the outside of the front wall of the head. A bevel gear 245 meshes with the bevel gear 24o. .A clutch collar 249 has usual spline groove and key connection with theshaft 289 and control clutches 250, 251, at its respective ends. The mating clutch teeth of the clutch 250are at the end of the hub of, the bevel gear 237 and one end of the clutch collar. The mating clutch teethof the clutch 251 are on the end of the bevel gear 249 and the clutch collar 2 19. 1 v

The clutch collar 249 ismoved endwise for engaging either 'of the clutches 250, 251, for conjournaled in bearings 254 in the head and having a handle 255 pivoted to its end at the outside of the front Wallof the head, arranged to be positioned selectively for neutral relation of the :5!

one of its ends, and at its other end clutches 250, 251, or for engagement of either of said clutches.

The horizontal feed screw 231 is journaled in bearings 256, 257, respectively in one wall of of the nut and a collar 261 threaded to the other end of the nut. The bearing 259 is on a slide 262 slidable endwise in guideways 263 at the lower edge of the bracket 88. A sleeve 264 is fixed to the spindle 41, as by screws 265.

The slide comprises a recess 266 closed by a 'cap 267 received about the end of the sleeve 264.

Radial ball bearings 268 and end-thrust ball bearings 269 are between the sleeve and the inner walls of said recess for accurately fitting the sleeve endwise to the slide and permitting accurate rotation of the spindle in the slide.

The head is preferably suitably counterbalanced, as by means of a weight 271 with which cables 272 connect, the other ends of the cables having connections 273 with the head. (Figs. 1, 2 and 3). The cables are received about sheaves 274 whose shafts 275 are journaled in a housing 276 fixed to the upper end of the column.

In my improved mechanism the gearing for rotating the spindle, the major portion of the wardly for operating the manual mechanism.'

1 have supplemented these operating and control mechanisms in the head, with control means which are at all times in fixed relation to the machine and within uniform and instant reach of the operator for connecting and disconnecting the drives for movements of the head, the saddle, table and the outer boring bar support, so that these feeds may be instantly started or stopped, depending on the exigencies of the work, and for safety. These latter means are also provided with automatic interlocking mechanism, so that only one of these operating devices may be placed in operative connection at a time.

I have supplemented these control means by hand operating means at similar definite and convenient position for the operator for these various devices. I shall call thesevarious devices control devices and have located the same at the base of the column under the head, and for convenience I have located the same in what I shall term a control box 277, which is exemplified as releasably secured to the base of the machine, as by bolts 278.

in the present arrangement the power shaft 170 has its lower end journaled in a bearing 281 in the box and has a bevel pinion fixed thereto. (Fig. 18). This bevel pinion meshes with a bevel gear 283 fixed to a shaft 284 journaled at one of its ends in a bearing 285 in the box. The other end of this is journaled in a sleeve 286 in turn journaled in a bearing 287 in the box. This sleeve. has gears 288, 289, fixed thereto. The shaft is held endwise by the hub of bevel gear 283 at one of its ends and a nut 290 at its other end.

A clutch collar 291 has usual spline groove and key connection with this shaft andhas a gear 292 fixed thereto. A clutch 293 is located between the clutch collar and the sleeve 283, the coacting teeth of which clutch are located respectively on the proximate ends of said clutch collar and said sleeve. The gears 292 and 288 mesh respectively with gears 294, 295, fixed to gether by a hub 296, and rotating loosely on a shaft 297, and journaled within bearings 298, 299.

The gear 289 meshes with a gear 361 loosely journaled about the shaft 297, the hub of the gear being journaled in the bearing 299 in the box.

The gear 301 (Fig. 18) meshes with a gear 302, which is loosely journaled about a shaft 303, and the hub of which is journaled in a bearing 304 in the box. The gear 302 meshes with a gear 305, which rotates loosely about a shaft 306, and the hub of which is journaled in a bearing 307 of the box.

The shaft 297 is journaled at its respective ends in bearings 308, 369. The shaft 303 is journaled at its respective ends in bearings 310, 311, in the box. The shaft 306 is journaled at its respective ends in bearings 307, 312, in the box.

The shaft 297 has a gear 315 fixed thereon, which meshes with a gear 316 fixed to a shaft 317 journaled in bearings 318 in the box. (Figs. 12 and 18.) The other end of this shaft has a bevel pinion 320 fixed thereto, which meshes with a bevel gear 321 fixed to the lower end of the upright screw 35, which has threaded connection with the nut 38 in the head, for raising and lowering the head.

It is desirable, when employing a boring bar supported at its outer end in the boring support, that elevational feeding movements and adjustments be simultaneously and quickly imparted to the head and to the bearing for the outer end of the boring bar. (Fig. 18). It is shown accomplished by providing a pinion 325, which meshes with the bevel gear 321 and is fixed to a shaft 326'journaled in a bearing 327 in the box. This shaft has an extension 328 fixed to it by a coupling 329.

The other end of this extension shaft is journaled in a bearing 330 in the outer end of the base. (Figs. 1 and 13). A bevel pinion 331 has usual spline groove and key connection with this shaft and is movable lengthwise of the shaft upon movement of the boring par support lengthwise of the base. Its hub is journaled in a bearing in a downwardly extending bracket 332 and is held endwise therein so as to move with the frame of the outboard support. This bevel pinion meshes with a bevel gear 335 fixed to a shaft 336 journaled in a bearing 337 fixed to the bottom portion of the standard 52. This shaft has a gear 338 at its upper end, which meshes with a gear 339 fixed to the upright screw 55. This screw has threaded connection with the nut 58 for raising and lowering the slide 50. This slide is provided with a clamp 340 for clamping the slide in adjusted positions on the standard 52, operated by a handle 341 for clamping and unclamping the same.

The shaft 303' has a gear 345 fixed thereto (Fig. 18), which meshes with a gear 346 fixed to a shaft 347 journaledin bearings 348, in the box, and having a bevel pinion 349 fixed thereto. This bevel pinion meshes with a bevel gear 350 fixed to a shaft 351 journaled in a bearing 352 in the 1,936,383 ranged to releasably connect the shaft 306 with box. A shaft extension 353 extends from this shaft and is coupled thereto by a coupling 354. This shart extends lengthwise of the base and is journaled at its outer end in a bearing 355 at the outer end 0 f the lease. (Fig. 13). This shaft takesthe in. of a screw-rod and is threaded in a nut 353 in carriage for moving the carriag "'idwise on the base. (Fig. 17).

.=6 (Fig. 13) has a bevel pinion 361 fixed thereto, whi i meshes with a bevel gear 362 fixed to a shaft 363 journaled in a hearing 364 in the box. The shaft comprises an extension 365 coupled thereto by a ecu This shaft has operative slidable n ith the table shifting mechanism 0 cal and is exemplified as having usua' rcove and key connection with a sleeve .iid at so; j'L-L. respective ends in bearings 363, 369, m'the carriage for fixing endwise movement thereof with relat on to the carriage. (Figs. 15 and 16) "1 seve has on a sp'ral gear 371 which ineshes l n a spiral gear 372 on a sleeve 373 journaled and held endwise in bearings 374 on the carriage. This sleeve rotates loosely about a shaft 375 journaled in sleeve and in bearings 376, 377, on the carriage. This shaft has a gear 373 fixed thereto, which meshes with a gear 379 on a nut 330 journal d in bearings 381 on the carriage. A cross feed screw 385 is threaded in this nut and is at its respective ends journaled anc held endwise in bearings 386, on the table. A clutch 387 is located between the sleeve 373 and a clutch collar 338 having usual spline groove and key connection with the shaft 375 and arranged to connect the power of the lengthwise shaft 365 with the feed screw 385 for the table when said clutch is engaged.

The clutch collar is movable lengthwise of its shaft for engagement and disengagement of the clutch. This clutch collar is movable endwise by means of fork 391, the pins of which are received in annular groove in the clutch collar The fork is fixed to a rock-shaft 392 journaled in the carriage. This rock-shaft is operated by means of a handle393 (Fig. 1), arranged to be fixed in neutral position or engaged position of the clutch.

The cross feed screw 385 for the table is also operable by hand by means of handles 394, 395,

arranged to be eluted-connected with a shaft 396 journaled in the forward end of the tableand provided with a spiral gear 397 which meshes with a spiral gear 393 fixed to the shaft 375. The hand feed is accomplished when the clutch 387 is disengaged, and during power feed the clutches between the handles 394, andthe shaft 096 are disengaged.

These various operated shafts are arranged to be selectively connected with the power feeding train of gearing and the quick traverse train of gen "ng, and also to be disconnected from said trains of he" so that the same may be retated by hand for hand feed or hand traverse of the operated devices, and means are also provided at the base of the column for controlling the connections with said respective shafts, and for automatically interlocking the same, and forselectively connecting the power trains of gearings or the hand feed with said respective shafts, automatically interlocking said connections.

Thus a clutch 401 is arranged to releasably connect the shat 297 with the gear 301. (Fig. 1-3). A clutch 402 is arranged to releasably connect the shaft 303 with the gear 302. A clutch 403 is arthe gear 305. These clutches and the operating means therefore are identical and are so exemplified. I

The interengaging teeth of the clutch-401 are on the proximate ends of the gear 331 and a clutchcollar 404 which has usual spline groove and key connection with the shaft 297. The clutch 433 has its interengaging teeth respectively on the gear 302 and a clutch-collar 435 having usual spline groove and key connection withthe shaft T e clutch 403 has its interengaging teeth respectively on proximate ends of the gear O5 a chit. c 406, having usual spline roove and key connection with the shaft 306. .-.hese ciutch collars are operated by shifters 407, 433, provided with forks 411, 412, 413. The respective forks have shoes 414 received in annular grooves 415, in the respective clutch-collars 404, 405, 406. The shoes are located on pins in the respective forks. v

The respective shifters are controlled by handles 421, 422, 423; (Figs. 1, 3 and 14), respectively arranged to be placed and held in neutral positions for neutral relations in the respective clutches 401, 432, 403, and engaged positions for engaged relationsfor the respective clutches.

The shifters and handles for the respective clutches are connected in similar manner. (Figs. 18, 20, 21 and 22). Thus each of the forks is provided with bearings 425 and each of the handles is provided with a pivot-part 426 in line with the bearings 425. A stem 427 is located in said bearings and in a bearing 428 in the bottom of the box. The pivot-part has a hub journal 429 in a bearing 430 in the cover 431 of the box. This cover is releasably secured to the box by screws 432.. (Figs. 14, 18 and 20). The handle is pivoted'by a pivot-pin 433 between lugs 434 on the pivot-part. A spring-pressed plunger 435 in the stem 427 engages a lower face 436 at the rear end of the handle for urging the knob-end of the handle downwardly. I

The cover is provided with an upwardly extending boss 437, (Figs. 14, 20 and 21), provided with slots 433, 439, and an end lug 440. The handle is provided with a lug 441 selectively received in these slots when the handle is shifted respectively for engaged position or fordisengaged position of the clutch. The end lug limits an ular movement of the handle and fork in release direction of the clutch-collar. The pivot part 426 has a lower retaining flange 424 to which it is fixed. by screw 442.

In order to permit locked position of the handle'for engaging relation of th clutch, regardless of interference between the teeth of the clutch, the fork is provided with a lug 443 and the flange 424 of the pivot-part is provided with a coacting lug 444 at one side of the lug 443 and with a sprin pressed plunger 445 at the other side of the latter lug. This plunger 's mounted in a bar.- rel 446 on the nange424, its stern 447 being received through a hol in the rear wall of said barrel, a spring 448 surrounding said stem between said rear wall and the headof the plunger for urging engagement between the lugs 444, 443, and permitting resilient yielding of the fork during movement of the handle in direction for enmovement of the fork for full engagement of the clutch.

, 455; 456 thereon.

The handles 421, 422, 423, are journaled on the cover 431 of the box, and when the cover is removed from the box, the handles as well as the retaining flanges 424 and the lug 444 and the spring-pressed plunger 445 thereon, as well as the pins 454, 455, 456, thereon, are removed, for full exposure of the operating parts and clutches in the box. The cover with its attached parts may be readily reassembled by locating all of the parts thereon as well as the coacting parts in the box in neutral relations, whereupon the cover may be placed upon the box and interengaging relations between the parts thereof and the parts in the box assured. Outward movements of the plungers 435 are limited so that they and the lugs 444 may be readily received at the respective sides of the lugs 443 on the forks.

.These pins are received in slots of interlock plates 461, 462, 463. The pins are respectively shiftable in slots in given ones of said respective plates for moving said respective plates, the respective plates being provided with shoulders for arresting movements of the others of said pins. The plates are superposed one on the other and are independently slidable in a guideway 464 of a shelf 465 on the upper end of upwardly extending brackets 466 connected by a foot 467 bolted to the bottom of the box by bolts 468. A retaina ing plate 469 is received over the guideway and the interlock plates and is fixed to the bracket by screws 470. The retaining plate and the shelf are provided with recesses 471, 472, 473, for accommodating movements of the pins. The slots in the interlock plates coincide with these recesses.

Referring to Fig. 24, the interlock plate 461 for the pin 454 actuated by the control handle 421, for controlling the engaged and disengaged relations of the clutch 401, which controls the train of gearing for elevation of the head and the outer bearing for the boring bar, has a slot 474 having straight side walls 474a, 4745. close to said pin, so that when the control handle 421 is shifted, the plate 461 will also be shifted. This plate is also provided with shoulders 475, 476, respectively moving into obstructing relations across the pins 455, 456 of the others of said control clutches, when the plate 461 is moved by the pin 454 into clutch engaging relation of the clutch 4G1.

This plate 461 is also provided with recesses 477, 478, into which the pins 455, 456, move when said pins are moved by their respective control handles while the plate 461 is in neutral or dis engaging relation of its clutch. The shoulders 475, 476, normally extend quite close to the pins 455, 456, when in neutral positions, giving just sufficient clearance for said pins to move when the plate is in neutral position.

Referring to Fig. 25, theinterlock plate, 462 for the pin 455 actuated by the control handle 422, for controlling the engaged and disengaged relations of the clutch 402, which controls the train of gearing for shifting the carriage, has a slot 481 having straight side walls 481a, 4811) close to said pin, so that when the control handle 422 is shifted, the plate 462 will also be shifted. This plate is also provided with shoulders 482,

483, sp t v y moving into obstructing rela- 482, 483 normally extend quite close to the pins 454, 456, when in neutral positions, giving just sufficient clearance for said pins to move when the plate is in neutral position.

Referring to Fig. 26, the interlocking plate 463 for the pin 456 actuated by the control. handle;

423, for controlling the engaged and disengaged relations of the clutch 403, which controls the train of gearing for feeding and positioning the table, has a slot 486 having straight side walls 486a, 4861) close to said pin, so that when the control handle 423 is shifted, the plate 463 will also be shifted. This plate is also provided with shoulders 487, 488, respectively moving into obstructing relations across the pins 454, 455 of the others of said control clutches, when the plate 463 is moved by the pin 456 into clutch engaging relation of the clutch 403.

This plate 463 is also provided with recesses 489, 490, into which the pins 454, 455 move when said pins are moved by their respective control handles while the plate 463 is in neutral or disengaging relation of its clutch. The shoulders 487, 488 normally extend quite close to the pins 454, 455, when in neutral positions, giving just suflicient clearance for said pins to move when the plate is in neutral position.

The manual operating means for the controlled gearing at the base of the column comprises a hand-wheel 491 fixed to a shaft 492 journaled in a bearing 493 in the box. (Figs. 1, 2, 14 and 18). This shaft has an annular groove 494 therein, in which a limit pin 495 screwed into the wall of the bearing is received, forlimiting endwise movement of the hand-wheel shaft. This shaft has a gear 496 thereon, which is arranged to be moved into and out of mesh with the gear 289 by endwise movement of the shaft by means of the handwheel.

When the hand-wheel is to be used, the power train of gearing is disconnected. (Figs. 18 and 19). This power train of gearing is instanced as including the collar 291 which has the gear 292 thereon, arranged to mesh with or to be disengaged from the gear 294, and also has a clutch face of the clutch 293 thereon, for engaging said collar with the clutch face on the sleeve 286, which latter also has the gear 289 fixed thereon.

When the gear 292 is in mesh with the gear 294, the drive for the sleeve 286 is through the gears 292, 294, 295, 288. When the collar 291 is moved axially for engaging the clutch 293, the gear 292 is moved out of mesh with its mating gear 294, so that the drive is through the shaft 284, the collar 291, the sleeve 286 and the gear 289.

The clutch is moved endwise by means of a handle 501 which operates a shoe 502 received in an annular groove 503 in the collar 291. The shoe is pivoted on an arm 504 fixed to a rock-shaft 565, journaled in a bearing 506 in the wall of the box and having the arm of the handle pivoted thereto on a pin 507 and located between cheeks 508 of a hub 509 fixed to said shaft.

A spring plunger 510 normally presses against the rear end of said arm for moving said arm into engagement with locking means for locking the arm in adjusted positions. These locking means comprise a lug 511 provided with notches 512, 513, 514, in which a lug 515 on the lever arm is selectively received.

The arm i is provided with an arresting flange 516 with which a rod 517, secured to the shaft .92, is received. This rod is axially secured in the shaft. Its rear end is received journalwise in a hole of a post 518 extending from the floor of the box. The arresting flange is provided with a slot 519 which is just suiilciently wide to receive the rod 517 when the collar 291 is in neutral position for disengagement both of its gear and its clutch member. When this collar is in such neutral position, the hand-Wheel 491 may be moved axially endwise, the rod 517 being received. in the slot 519 and the pinion 496 being moved axially into mesh with the gear 289 for completing the train of gearing to the various shafts and screw-rods controlled by the control clutches at the base of the column.

lv'hen the hand-Wheel is withdrawn for disengaging the pinion 496, the rod 517 is moved out of the slot 519 so that the handle 591 may again be operated out of neutral position for engaging either the gear 292 or the. clutch 293. When either of these movements takes place, the Wall of the flange is in obstructing relation with the rod 517, so that the hand-wheel cannot be moved for meshing relation with the gears as long as the power drive is effective.

Th forward ends of the respective shafts 297, see, are provided with dials 521, 522, 523, (Figs. 1, 2, 1-; and 18), espectively releasably secured to said shafts, as by means of set-screws 524, in said respective dials and clamp upon the respective shafts for desirably positioning the dials with relation to the graduating marks on the respective flanges 525, 526, 527, with which the g aduating dials register. The dials or tr e nanges may be provided with micrometer scales, the other of said parts being provided with a corresponding mark. The micrometer scales are shown on the dials.

Having thus fully described my invention, What I claim as n w, and desire to secure by Letters Patent, is:

in a device of the character described, the combination of a base, a column therefor, a head on said column, a carriage on said base, a table on said carriage, feeding means for said head, said carriage and said table respectively comprising feed shafts having ends at the base of said column, feed changing gearing and quick traverse gearing in said head, control handles on said head for said gearings, primary driving means at the base of said column including speed change gearing, an upright shaft driven thereby and extending lengthwise of said column and having operative connection with aid gearings in said head, control gearings at the base of said column having operative connections respectively with said.

ends of said respective feed shafts and respectively including interrupting members for said respective feed shafts, an upright shaft operated by said respective gearings in said head and having operative connection with said control gearings including an interrupting member, a hand wheel at the base of said column under said head for rotating control gearings during interrupted relation in said last-named interrupting member, and control handl s at the base of said column under said head having operative connections with said respective first-named interrupting members, whereby changes of feed are controlled by control handles on'said head, and power and manual transmissions of said respective feed shafts are controlled by manually opertable respectively, a stationary control box at the base of column under said head with rclation to which head is feedable vertically, said control box separate from said base and said column, means for releasably attaching said control box to said base undersaid h ad, control gear-v ings in said control box including interrupting means for said respective feed shafts, releasable connecting means 3 ween said gearings in said control box and said respective feed shafts, feed changing gearing in said head, control handles on said head for said feed change gearingan upright shaft between said feed change gearing in said head and said control box, the lower end of said upright shaft having operative connection with said control gearlngs in said control box, and control handles on said control box for said respective control gearings.

3. In a machine of the character described, the combination of a base, a column therefor, a tool carrying head feedable on said column, a carriage feedable on said base, a work-supporting table feedable on said carriage, feed changing gearing on said head, feed shafts for said head, said carriage and said table respectively, a control box at the base of said column under said head, said control box separate from said base and said column, means for releasably attaching said control box to said base under said head, a cover for said control box, control geadngs in said box for said feed shafts respectively and including interrupting elements, releasable connecting means between said control gearing in said box and said respective feed shafts, relatively slidable interlock plates mounted in said box respectively having operative connections with said interrupting elements, control handles on said cover respectively having release connections with said interlock plates arranged for connecting relations with said interlock plates by placing said cover on said box, and means for securing said cover to said box.

4. In a machine of the character described, the combination of a base, a column therefor, a tool carrying head feedable on said column, a carriage feedable on said base, a work-supporting table feedable on said carriage, feed changing gearing on said head, feed shafts for said head, said carriage and said table respectively, a control box at the base of said column under said h ad, said control box separate from said base and said column, means for releasably attaching said control box to said base under said head, a cover said control box, control gearings in said for said feed shafts respectively, tooth clutches in said control box for said respective control gearings respectively having axially movable tooth membcrs, releasable connecting means between said tooth clutches and said respective feed shafts control handles on said box, locking means for said control handles, said control handles having operative connections with said axially movable tooth members including resiliently loo yieldable parts yielding to locked relations of said control handles and urging engagements in axial directions in said clutches respectively upon registering relations between the teeth and tooth spaces of mating tooth members, and interlocking means for said control handles.

5. In a machine of the character described, the combination of a base, a column extending upwardly therefrom, a head feedable vertically on said column, a carriage feedable on said base, a table feedable on said carriage, a stationarily positioned box at the base of said column under said head, feed shafts for said head, said carriage and said table respectively, control gearings in said box for said respective feed shafts, said respective gearings including interrupting members, releasable connecting means between said interrupting members and said respective feed shafts, a removable cover for said box, handles on said cover, shifting means between said handles and said respective interrupting members comprising operated parts in said box and op-- erating parts on said cover having releasable connection with said operated parts, interlocking means in said box for said respective handles, said operating parts including engaging parts releasably connecting with said interlocking means, said handles, said operating parts and said engaging parts removable with said cover, and means for securing said cover to said box.

6. In mechanism of the character described, the combination with the base, the column, the spindle head feedable up and down, the saddle movable lengthwise of the base, and the table movable crosswise of the saddle, of a releasable gear box on said base under said head, releasable connecting means between said gear box and said base, feed shafts for said head, said saddle and said table respectively, intermeshed gearings in said gear box, speed-changing gearing for operating the latter, clutches for said respective feed shafts comprising clutching elements respectively rotating with said respective intermeshed gearings and said respective feed shafts and including shiftable clutching elements for selectively clutching in the feeding power for said respective feed shafts, a manual operating handle for each of said last-named clutch members, and a locking plate for each of said manual operating handles, said locking plates shiftable relatively to each other, and the locking plate for each of said handles provided with obstructing faces for the others of said handles, whereby engagement in only one of said clutches at a time is possible.

CECIL J. DAVIS. 

